#!/bin/sh

### BEGIN INIT INFO
# Provides:	  mostats
# Required-Start:    $local_fs $remote_fs $network $syslog $named
# Required-Stop:     $local_fs $remote_fs $network $syslog $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the mostats web server
# Description:       starts mostats using daemon
### END INIT INFO

PATH=`dirname $0`/lib:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/home/shiguangqi/workspace/module_stats/server/log_svr/server/log_svr
NAME=log_svr
DESC=log_svr

INIT_VERBOSE=true
. /lib/init/vars.sh
. /lib/lsb/init-functions

PID=/home/shiguangqi/workspace/module_stats/server/run/log_svr.pid

#
# Function that starts the daemon/service
#
do_start()
{
	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	daemon --start --quiet --pidfile $PID --exec $DAEMON
    RETVAL="$?"
    return "$RETVAL"
}


#
# Function that stops the daemon/service
#
do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PID --name $NAME
	RETVAL="$?"

	sleep 1
	return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
	daemon --stop --signal HUP --quiet --pidfile $PID --name $NAME
	return 0
}

#
# Rotate log files
#
do_rotate() {
	daemon --stop --signal USR1 --quiet --pidfile $PID --name $NAME
	return 0
}

#
# Online upgrade nginx executable
#
# "Upgrading Executable on the Fly"
# http://nginx.org/en/docs/control.html
#
do_upgrade() {
	# Return
	#   0 if nginx has been successfully upgraded
	#   1 if nginx is not running
	#   2 if the pid files were not created on time
	#   3 if the old master could not be killed
	if daemon --stop --signal USR2 --quiet --pidfile $PID --name $NAME; then
		# Wait for both old and new master to write their pid file
		while [ ! -s "${PID}.oldbin" ] || [ ! -s "${PID}" ]; do
			cnt=`expr $cnt + 1`
			if [ $cnt -gt 10 ]; then
				return 2
			fi
			sleep 1
		done
		# Everything is ready, gracefully stop the old master
		if daemon --stop --signal QUIT --quiet --pidfile "${PID}.oldbin" --name $NAME; then
			return 0
		else
			return 3
		fi
	else
		return 1
	fi
}

case "$1" in
	start)
		[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
		do_start
		case "$?" in
			0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
			2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
		esac
		;;
    _start)
        do_start
        exit "$?"
        ;;
	stop)
		[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
		do_stop
		case "$?" in
			0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
			2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
		esac
		;;
    _stop)
        do_stop
        exit "$?"
        ;;
	restart)
		log_daemon_msg "Restarting $DESC" "$NAME"
		do_stop
		case "$?" in
			0|1)
				do_start
				case "$?" in
					0) log_end_msg 0 ;;
					1) log_end_msg 1 ;; # Old process is still running
					*) log_end_msg 1 ;; # Failed to start
				esac
				;;
			*)
				# Failed to stop
				log_end_msg 1
				;;
		esac
		;;
	status)
		status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $?
		;;
	upgrade)
		log_daemon_msg "Upgrading binary" "$NAME"
		do_upgrade
		log_end_msg 0
		;;
	rotate)
		log_daemon_msg "Re-opening $DESC log files" "$NAME"
		do_rotate
		log_end_msg $?
		;;
	*)
		echo "Usage: $NAME {start|stop|restart|reload|force-reload|status|configtest|rotate|upgrade}" >&2
		exit 3
		;;
esac

:
